The Virtualization Practice

Virtualization Security

Virtualization Security focuses upon end-to-end security, integrity, auditability, and regulatory compliance for virtualization and clouds. Virtualization Security starts where the cloud and virtual environments begin: the end user computing device. ...
We follow the user through the virtual and cloud stacks until they reach the application the user wishes to use to retrieve the data that is important to them. Virtualization and cloud security is implemented where there is an intersection between user, data, and application while maintain strict control of management interfaces. As such virtualization security looks into all aspects of security devices, tools, controls, and guides that impact or can be used to secure virtual and cloud environments.

Rethinking vNetwork Security

Brad Hedlund of Cisco asked the question, should the physical network security policy be different than the virtual network security policy? The answer is obviously no, but why are they treated separately? I and other have pushed the concept that to gain performance, redundancy, and security that you should use multiple network links to your virtualization host to separate traffic. However, does this really give you security?

There are two key features missing from Virtualization and Cloud Computing. Those are auditing and forensics. The A6 project aims to fix this problem for auditing, but there is only some research into forensics. The issue is about discovering who did what when, where, how, and hopefully why. Auditing plays into this for Compliancy but also for forensics. Forensics has two major components in its arsenal: Audit Trails, and Disk Images.

I was privileged to speak at the 3rd Annual South Florida ISACA WoW! Event with Robert Stroud, Alan Shimel, and other great speakers. What I discovered from this conference is something I have feared for quite a number of years. Compliance actions are not continuous but often only enacted when the auditor shows up at the door. Secondly, very few auditors raised their hand when I asked if they are working with Virtualization or have customers that virtualize, this was quite a surprise.

In the article End-to-End Virtual Machine Backup I mentioned the new VMware Workstation 7.0 feature that creates an encrypted disk but in reality it is an encrypted virtual machine, which also implies encrypting the virtual disk. This one option to VMware Workstation is something that is needed within VMware vSphere as well as the other hypervisors. Encrypting virtual disk data can add to the overall security stance based on the encryption technology employed. So what do we need with virtual disk encryption?